Django登录、注册和修改密码简单页面实现

1、创建Model

userpw/models.py

from django.db import models
import hashlib
# Create your models here.

class User(models.Model):
    username = models.CharField(max_length=30)
    password = models.CharField(max_length=50)
    last_login = models.DateTimeField(blank=True)

    def __unicode__(self):
        return self.username

2、创建View

userpw/views.py

# -*- coding: utf-8 -*-
from django.http import HttpResponse,HttpResponseRedirect
from django.shortcuts import render_to_response ,RequestContext
from django import forms
from userpw.models import User

# Create your views here.
##定义了UserForm表单用于注册和登录页面，ChangeForm表单用于修改密码页面
class UserForm(forms.Form):
    username = forms.CharField(label='用户名')
    password = forms.CharField(label='密   码',widget=forms.PasswordInput())
    #last_login = forms.DateTimeField()

class ChangeForm(forms.Form):
    username = forms.CharField(label='用户名')
    old_password = forms.CharField(label='原密码',widget=forms.PasswordInput())
    new_password = forms.CharField(label='新密码',widget=forms.PasswordInput())


def regist(request):
    if request.method == 'POST':
        uf = UserForm(request.POST)
        if uf.is_valid():
            username = uf.cleaned_data['username']
            password = uf.cleaned_data['password']

            ##判断用户原密码是否匹配
            user = User.objects.filter(username = username)
            if user:
                info = '用户名已存在!'
            elif len(user) == 0:
                info = '注册成功!'
                user = User()
                user.username = username
                user.password = password
                user.save()

            return HttpResponse(info)
    else:
        uf = UserForm()

    return render_to_response('regist.html', {'uf': uf})

def login(request):
    if request.method == 'POST':
        ##获取表单信息
        uf = UserForm(request.POST)
        if uf.is_valid():
            username = uf.cleaned_data['username']
            password = uf.cleaned_data['password']

            ##判断用户密码是否匹配
            user = User.objects.filter(username = username)
            if user:
                passwd = User.objects.filter(username = username, password = password)
                if passwd:
                    info = '登录成功！'
                else:
                    info = '请检查密码是否正确!'
            elif len(user) == 0:
                info = '请检查用户名是否正确!'

            return HttpResponse(info)
    else:
        uf = UserForm()

    return render_to_response('login.html', {'uf': uf})

def change_pass(request):
    if request.method == 'POST':
        uf = ChangeForm(request.POST)
        if uf.is_valid():
            username = uf.cleaned_data['username']
            old_password = uf.cleaned_data['old_password']
            new_password = uf.cleaned_data['new_password']

            ##判断用户原密码是否匹配
            user = User.objects.filter(username = username)
            if user:
                passwd = User.objects.filter(username = username , password = old_password )
                if passwd:
                    User.objects.filter(username = username,password = old_password).update(password = new_password)        ##如果用户名、原密码匹配则更新密码
                    info = '密码修改成功!'
                else:
                    info = '请检查原密码是否输入正确!'
            elif len(user) == 0:
                info = '请检查用户名是否正确!'

        return HttpResponse(info)
    else:
        uf = ChangeForm()
    return render_to_response('change.html',{'uf':uf})

3、创建Template模板

userpw/template/regist.html

    
    


regist

{{uf.as_p}}

userpw/template/login.html

    
    


login

{{uf.as_p}}

userpw/template/change.html

    
    


Change Password

{{uf.as_p}}